Forecast for station KIAD, forecast created on 282053Z, covering the period from 05/28 21:00Z to 05/30 00:00Z... Forecast calls for wind from heading 200° at 6 knots gusting to 14 knots. Visibility unlimited. Scattered clouds at 5000 feet... From 05/29 01:00Z expect wind from heading 190° at 4 knots. Visibility unlimited. Scattered clouds at 25000 feet... From 05/29 09:00Z expect mist. Variable winds at 3 knots. Visibility 5 miles. Scattered clouds at 25000 feet... From 05/29 12:00Z expect wind from heading 200° at 7 knots. Visibility unlimited. Scattered clouds at 3000 feet... From 05/29 18:00Z expect wind from heading 210° at 11 knots. Visibility unlimited. Broken clouds at 4000 feet... From 05/29 20:00Z expect vicinity thunderstorms. Wind from heading 230° at 12 knots. Visibility unlimited. Broken cumulonimbus clouds at 4000 feet...